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From: Jiri Olsa <jolsa@redhat.com>
To: rostedt@goodmis.org, fweisbec@gmail.com, mingo@redhat.com
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@redhat.com>
Subject: [PATCH 2/5] tracing, function_graph: Merge overhead and duration display functions
Date: Fri,  3 Jun 2011 16:20:00 +0200	[thread overview]
Message-ID: <1307110803-9476-3-git-send-email-jolsa@redhat.com> (raw)
In-Reply-To: <1307110803-9476-1-git-send-email-jolsa@redhat.com>

Functions print_graph_overhead and print_graph_duration displays
data for one field - DURATION.

I merged them into single function print_graph_duration,
and added way to display empty parts of the field.

This way the print_graph_irq function can use this column to display
the IRQ signs if needed and the DURATION field details stays inside
the print_graph_duration function.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
---
 kernel/trace/trace_functions_graph.c |  148 +++++++++++++++++-----------------
 1 files changed, 74 insertions(+), 74 deletions(-)

diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 352652e..44b955f 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -74,6 +74,20 @@ static struct tracer_flags tracer_flags = {
 
 static struct trace_array *graph_array;
 
+/*
+ * DURATION column is being also used to display IRQ signs,
+ * following values are used by print_graph_irq and others
+ * to fill in space into DURATION column.
+ */
+enum {
+	DURATION_FILL_FULL  = -1,
+	DURATION_FILL_START = -2,
+	DURATION_FILL_END   = -3,
+};
+
+static enum print_line_t
+print_graph_duration(unsigned long long duration, struct trace_seq *s,
+		     u32 flags);
 
 /* Add a function return address to the trace stack on thread info.*/
 int
@@ -577,32 +591,6 @@ get_return_for_leaf(struct trace_iterator *iter,
 	return next;
 }
 
-/* Signal a overhead of time execution to the output */
-static int
-print_graph_overhead(unsigned long long duration, struct trace_seq *s,
-		     u32 flags)
-{
-	/* If duration disappear, we don't need anything */
-	if (!(flags & TRACE_GRAPH_PRINT_DURATION))
-		return 1;
-
-	/* Non nested entry or return */
-	if (duration == -1)
-		return trace_seq_printf(s, "  ");
-
-	if (flags & TRACE_GRAPH_PRINT_OVERHEAD) {
-		/* Duration exceeded 100 msecs */
-		if (duration > 100000ULL)
-			return trace_seq_printf(s, "! ");
-
-		/* Duration exceeded 10 msecs */
-		if (duration > 10000ULL)
-			return trace_seq_printf(s, "+ ");
-	}
-
-	return trace_seq_printf(s, "  ");
-}
-
 static int print_graph_abs_time(u64 t, struct trace_seq *s)
 {
 	unsigned long usecs_rem;
@@ -650,9 +638,9 @@ print_graph_irq(struct trace_iterator *iter, unsigned long addr,
 	}
 
 	/* No overhead */
-	ret = print_graph_overhead(-1, s, flags);
-	if (!ret)
-		return TRACE_TYPE_PARTIAL_LINE;
+	ret = print_graph_duration(DURATION_FILL_START, s, flags);
+	if (ret != TRACE_TYPE_HANDLED)
+		return ret;
 
 	if (type == TRACE_GRAPH_ENT)
 		ret = trace_seq_printf(s, "==========>");
@@ -662,9 +650,10 @@ print_graph_irq(struct trace_iterator *iter, unsigned long addr,
 	if (!ret)
 		return TRACE_TYPE_PARTIAL_LINE;
 
-	/* Don't close the duration column if haven't one */
-	if (flags & TRACE_GRAPH_PRINT_DURATION)
-		trace_seq_printf(s, " |");
+	ret = print_graph_duration(DURATION_FILL_END, s, flags);
+	if (ret != TRACE_TYPE_HANDLED)
+		return ret;
+
 	ret = trace_seq_printf(s, "\n");
 
 	if (!ret)
@@ -716,9 +705,48 @@ trace_print_graph_duration(unsigned long long duration, struct trace_seq *s)
 }
 
 static enum print_line_t
-print_graph_duration(unsigned long long duration, struct trace_seq *s)
+print_graph_duration(unsigned long long duration, struct trace_seq *s,
+		     u32 flags)
 {
-	int ret;
+	int ret = -1;
+
+	if (!(flags & TRACE_GRAPH_PRINT_DURATION))
+		return TRACE_TYPE_HANDLED;
+
+	/* No real adata, just filling the column with spaces */
+	switch (duration) {
+	case DURATION_FILL_FULL:
+		ret = trace_seq_printf(s, "              |  ");
+		return ret ? TRACE_TYPE_HANDLED : TRACE_TYPE_PARTIAL_LINE;
+	case DURATION_FILL_START:
+		ret = trace_seq_printf(s, "  ");
+		return ret ? TRACE_TYPE_HANDLED : TRACE_TYPE_PARTIAL_LINE;
+	case DURATION_FILL_END:
+		ret = trace_seq_printf(s, " |");
+		return ret ? TRACE_TYPE_HANDLED : TRACE_TYPE_PARTIAL_LINE;
+	}
+
+	/* Signal a overhead of time execution to the output */
+	if (flags & TRACE_GRAPH_PRINT_OVERHEAD) {
+		/* Duration exceeded 100 msecs */
+		if (duration > 100000ULL)
+			ret = trace_seq_printf(s, "! ");
+		/* Duration exceeded 10 msecs */
+		else if (duration > 10000ULL)
+			ret = trace_seq_printf(s, "+ ");
+	}
+
+	/*
+	 * The -1 means we either did not exceed the duration tresholds
+	 * or we dont want to print out the overhead. Either way we need
+	 * to fill out the space.
+	 */
+	if (ret == -1)
+		ret = trace_seq_printf(s, "  ");
+
+	/* Catching here any failure happenned above */
+	if (!ret)
+		return TRACE_TYPE_PARTIAL_LINE;
 
 	ret = trace_print_graph_duration(duration, s);
 	if (ret != TRACE_TYPE_HANDLED)
@@ -767,18 +795,11 @@ print_graph_entry_leaf(struct trace_iterator *iter,
 			cpu_data->enter_funcs[call->depth] = 0;
 	}
 
-	/* Overhead */
-	ret = print_graph_overhead(duration, s, flags);
-	if (!ret)
+	/* Overhead and duration */
+	ret = print_graph_duration(duration, s, flags);
+	if (ret == TRACE_TYPE_PARTIAL_LINE)
 		return TRACE_TYPE_PARTIAL_LINE;
 
-	/* Duration */
-	if (flags & TRACE_GRAPH_PRINT_DURATION) {
-		ret = print_graph_duration(duration, s);
-		if (ret == TRACE_TYPE_PARTIAL_LINE)
-			return TRACE_TYPE_PARTIAL_LINE;
-	}
-
 	/* Function */
 	for (i = 0; i < call->depth * TRACE_GRAPH_INDENT; i++) {
 		ret = trace_seq_printf(s, " ");
@@ -815,17 +836,10 @@ print_graph_entry_nested(struct trace_iterator *iter,
 			cpu_data->enter_funcs[call->depth] = call->func;
 	}
 
-	/* No overhead */
-	ret = print_graph_overhead(-1, s, flags);
-	if (!ret)
-		return TRACE_TYPE_PARTIAL_LINE;
-
 	/* No time */
-	if (flags & TRACE_GRAPH_PRINT_DURATION) {
-		ret = trace_seq_printf(s, "            |  ");
-		if (!ret)
-			return TRACE_TYPE_PARTIAL_LINE;
-	}
+	ret = print_graph_duration(DURATION_FILL_FULL, s, flags);
+	if (ret != TRACE_TYPE_HANDLED)
+		return ret;
 
 	/* Function */
 	for (i = 0; i < call->depth * TRACE_GRAPH_INDENT; i++) {
@@ -1078,18 +1092,11 @@ print_graph_return(struct ftrace_graph_ret *trace, struct trace_seq *s,
 	if (print_graph_prologue(iter, s, 0, 0, flags))
 		return TRACE_TYPE_PARTIAL_LINE;
 
-	/* Overhead */
-	ret = print_graph_overhead(duration, s, flags);
-	if (!ret)
+	/* Overhead and duration */
+	ret = print_graph_duration(duration, s, flags);
+	if (ret == TRACE_TYPE_PARTIAL_LINE)
 		return TRACE_TYPE_PARTIAL_LINE;
 
-	/* Duration */
-	if (flags & TRACE_GRAPH_PRINT_DURATION) {
-		ret = print_graph_duration(duration, s);
-		if (ret == TRACE_TYPE_PARTIAL_LINE)
-			return TRACE_TYPE_PARTIAL_LINE;
-	}
-
 	/* Closing brace */
 	for (i = 0; i < trace->depth * TRACE_GRAPH_INDENT; i++) {
 		ret = trace_seq_printf(s, " ");
@@ -1146,17 +1153,10 @@ print_graph_comment(struct trace_seq *s, struct trace_entry *ent,
 	if (print_graph_prologue(iter, s, 0, 0, flags))
 		return TRACE_TYPE_PARTIAL_LINE;
 
-	/* No overhead */
-	ret = print_graph_overhead(-1, s, flags);
-	if (!ret)
-		return TRACE_TYPE_PARTIAL_LINE;
-
 	/* No time */
-	if (flags & TRACE_GRAPH_PRINT_DURATION) {
-		ret = trace_seq_printf(s, "            |  ");
-		if (!ret)
-			return TRACE_TYPE_PARTIAL_LINE;
-	}
+	ret = print_graph_duration(DURATION_FILL_FULL, s, flags);
+	if (ret != TRACE_TYPE_HANDLED)
+		return ret;
 
 	/* Indentation */
 	if (depth > 0)
-- 
1.7.1


  parent reply	other threads:[~2011-06-03 14:20 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-03 14:19 [PATCH 0/5] tracing, function, graph: Fixies for field display Jiri Olsa
2011-06-03 14:19 ` [PATCH 1/5] tracing, function_graph: Remove dependency of abstime and duration fields on latency Jiri Olsa
2011-06-03 14:20 ` Jiri Olsa [this message]
2011-06-03 14:20 ` [PATCH 3/5] tracing, function: Fix trace header to follow context-info option Jiri Olsa
2011-06-03 14:20 ` [PATCH 4/5] tracing, function_graph: Remove lock-depth from latency trace Jiri Olsa
2011-06-03 14:20 ` [PATCH 5/5] tracing, function_graph: Add context-info support for function_graph tracer Jiri Olsa
2011-06-03 14:26 ` [PATCH 0/5] tracing, function, graph: Fixies for field display Steven Rostedt
2011-06-03 14:53   ` Jiri Olsa
2011-06-03 14:58   ` [PATCHv2 " Jiri Olsa
2011-06-03 14:58     ` [PATCHv2 1/5] tracing, function_graph: Remove dependency of abstime and duration fields on latency Jiri Olsa
2011-06-03 15:02       ` Steven Rostedt
2011-07-05 12:51       ` [tip:perf/core] " tip-bot for Jiri Olsa
2011-06-03 14:58     ` [PATCHv2 2/5] tracing, function_graph: Merge overhead and duration display functions Jiri Olsa
2011-07-05 12:52       ` [tip:perf/core] " tip-bot for Jiri Olsa
2011-06-03 14:58     ` [PATCHv2 3/5] tracing, function: Fix trace header to follow context-info option Jiri Olsa
2011-07-05 12:52       ` [tip:perf/core] " tip-bot for Jiri Olsa
2011-06-03 14:58     ` [PATCHv2 4/5] tracing, function_graph: Remove lock-depth from latency trace Jiri Olsa
2011-07-05 12:52       ` [tip:perf/core] " tip-bot for Jiri Olsa
2011-06-03 14:58     ` [PATCHv2 5/5] tracing, function_graph: Add context-info support for function_graph tracer Jiri Olsa
2011-07-05 12:53       ` [tip:perf/core] " tip-bot for Jiri Olsa

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